Bipolar illness with symptoms in the top 10th percentile of manic features is associated with higher iq, particularly verbal iq.
Kids with higher iq are less likely to be diagnosed with psychiatric illnesses later in life, except for bipolar disorder with predominantly manic features.
There's u-shaped curve associated with diagnosis and grades in highschool. There' a j shaped curve with hospitalizations.
https://en.m.wikipedia.org/wiki/Cognitive_epidemiology

Basically, if you become manic and psychotic but can return to a euthymic mood and premorbid cognition instead of deteriorating, you're likely to have a higher iq.

Here's a quote by a famous bipolar psychiatrist:
>I long ago abandoned the notion of a life without storms, or a world without dry and killing seasons. Life is too complicated, too constantly changing, to be anything but what it is. And I am, by nature, too mercurial to be anything but deeply wary of the grave unnaturalness involved in any attempt to exert too much control over essentially uncontrollable forces. There will always be propelling, disturbing elements, and they will be there until, as Lowell put it, the watch is taken from the wrist. It is, at the end of the day, the individual moments of restlessness, of bleakness, of strong persuasions and maddened enthusiasms, that inform one's life, change the nature and direction of one's work, and give final meaning and color to one's loves and friendships.

t. 130iq and taking Lithium. Also had crazy manic psychotic episodes where I would hear voices, have incredible delusions, increased goal setting, significant energy increase, and increased creative drive.